An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is known to be $1,000. A random sample of 50 individuals resulted in an average income of $15,000. What is the width of the 90% confidence interval?
A) $364.30
B) $728.60
C) $232.60
D) $465.23

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The Answer of An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is known to be $1,000. A random sample of 50 individuals resulted in an average income of $15,000. What is the width of the 90% confidence interval?
A) $364.30
B) $728.60
C) $232.60
D) $465.23

An Economist Is Interested in Studying the Incomes of Consumers